Using a soda siphon should work Just fine. I have made a variety of italian sodas using one as well. The biggest issue is mostley with cleaning the top siphon Part. The guy at hoptech is good and also sets several flavors of rootbeers and cream Soda. As to the siphons you can get then from various places including Target (online, they never seen to carry the stuff locally.) Also try http://prairiemoon.biz/index.html
they have siphons and a variety of flavors). Good Luck!